Duke freshman forward Harry Giles underwent a left knee arthroscopy on Monday and is expected to be out six weeks, the team announced.
"We're very pleased with the outcome of today's procedure," head coach Mike Krzyzewski said in a statement. "This is the right step for Harry at the moment as it will help him be 100 percent going forward. Harry has done a tremendous job in rehabilitation over the last year and I'm sure he'll continue to do the same after this procedure."
The 6-foot-11 Giles is part of Duke's heralded freshmen class that also includes fellow forwards Jayson Tatum and Marques Bolden.
Giles is projected as the No 3 pick in the 2017 NBA Draft by DraftExpress.com. He tore the ACL, MCL and meniscus in his left knee in 2013 and missed his sophomore season at Wesleyan (N.C.) Christian. He also tore his right ACL and was forced to miss his senior season at Oak Hill Academy (VA.).
The projected No. 1 team in the nation, Duke will open the season on Nov. 11 against Marist.
The Blue Devils are also slated to face Josh Jackson and Kansas in the Champions Classic On Nov. 15 at Madison Square garden.
Duke is also slated to hold NBA Pro Days Oct. 19 and Oct. 25 that Giles will now miss.